Occasionally, you may have questions about how to select a heat transfer fluid, what to look for when purchasing and maintaining your heat transfer system, troubleshooting and more. Our Tips & How-To's section is your source for all sorts of useful information.
Duratherm fluids are engineered to have a long service life and as a value-added service to you, our customers, we offer a complimentary, free-of-charge analysis program to ensure your investment is protected and your fluid life is optimized for your application.
This document is offered as a general guideline to starting a new or freshly filled system. Please follow proper safety procedures and consult your system manufacturer for specifics on your system and what steps need to be taken to ensure a smooth and safe startup.
All hot oils (heat transfer fluids) have a limit to the time they can be utilized in an extruder. The key factor affecting service life is mainly the type of fluid being used. However, process temperatures and production rates are just a few of the more minor factors involved in determining the length of time between fluid changes.
The scientific definition of oxidative degradation is the reaction of oxygen (in air) with the fluid by a free radical mechanism to form larger molecules, which end up as polymers or solids. These thicken the fluid, increasing its viscosity.
Regardless of system design, size or heat source, there are a few basic procedures that should be followed when starting up or shutting down your heat transfer system. Following these procedures will help maximize the life of your fluid by reducing incidents of thermal degradation.